DNA Basics
Part of DNA that codes for a trait.
Gene
Different versions of the same gene
Alleles
The combination of alleles an organism has.
Genotype
An allele that is expressed even with one copy.
Dominant
The female and male reproductive cells.
The molecule that carries genetic information.
DNA
If a gene controls eye color, brown and blue versions are called this.
Alleles
The observable traits of an organism.
Phenotype
An allele expressed only when two copies are present.
Recessive
The process where sperm and egg join.
Fertilization
DNA is tightly packaged inside this structure in the cell.
Chromosome
Eye color and hair color are examples of this.
Phenotype
Dominant alleles are usually written with this type of letter.
Capital letter
When type of pollination involves a plant reproducing on its own
Self-Pollination
The molecule DNA is made of repeating units called this.
Nucleotide
AA, Aa, and aa represent this.
Genotype
Recessive alleles are written with this type of letter.
Lowercase letter
The transfer of pollen from one plant to the reproductive part of another plant.
Cross-pollination
The order of these determines genetic information in DNA.
Nitrogen bases
A recessive trait appears when the genotype is this.
aa